Here's a few parks from my youth in the Northeast.
Paragon Park: What had once been New England's answer to Coney Island was a rotting shell of it's former self when I got to it. Still, it had one of the top roller coasters in the world (now moved to Maryland) and the awesome Bermuda Triangle dark boatride. The carousel has survived as a landmark and still operates today complete with ring grabs for free rides. The once mighty roller coaster is now a huge condo tower.
http://maps.google.com/?ie=UTF8&om=1&z=17&ll=42.269084,-70.855272&spn=0.005335,0.010868&t=k
Rocky Point Park: This park had an amazing log flume ride. Towards the end they added a basic steel corkscrew coaster, but also charged extra to ride (fifty cents I believe.) Other than that, mostly just a bunch of spinning flat rides, but really the best park Rhode Island had to offer (can't think of another.)
http://maps.google.com/?ie=UTF8&om=1&z=17&ll=41.68937,-71.367187&spn=0.005384,0.010868&t=k
Lincoln Park: What I would consider to be my "home" park as we made it there every year when I was a child. Really the perfect local park with a good mix of everything to satisfy everyone. The coaster still stands and as I understand it, is for sale- please buy it!
http://maps.google.com/?ie=UTF8&z=17&ll=41.636711,-71.041846&spn=0.005388,0.010868&t=k&om=1